# 遊んで覚える古文単語500 vs Chempuz

The clearest difference is in-app purchases: 遊んで覚える古文単語500 at none against Chempuz's 2. 遊んで覚える古文単語500 also leads on ads (none vs shown) and iOS requirement (8.0 vs 15.0). Chempuz's advantage is review sentiment (100% vs 69%) and update cadence (every 5 weeks vs every 4 months). On price and device support there is nothing between them.

Both are free to download. Chempuz sells 2 one-off in-app purchases. 遊んで覚える古文単語500 asks for nothing beyond the download.

遊んで覚える古文単語500 ships an update every 4 months, Chempuz every 5 weeks. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 遊んで覚える古文単語500 | Chempuz |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 69.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 31 MB | 57 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yabuzaki Company, Inc.](https://appshunter.io/developer/505048558) | [TomatoAppLab](https://appshunter.io/developer/1676711750) |

## What reviewers say

### 遊んで覚える古文単語500

[App page](https://appshunter.io/ios/app/500/id1155921778)

Learn classical Japanese vocabulary through engaging games. This app covers 500 essential words, making it ideal for preparing for university entrance exams and standardized tests.

**Highlights:** Learn 500 classical Japanese words, Game-based learning, Exam preparation, University entrance exams, Center test preparation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Chempuz

[App page](https://appshunter.io/ios/app/chempuz/id6446211267)

Learn organic chemistry basics by creating molecules and completing puzzles. Trace functional groups to build compounds, score higher with complex structures, and use flashcards to memorize names. Enjoy learning through engaging gameplay.

**Highlights:** Create organic molecules by tracing functional groups, Build approximately 100 types of organic molecules, Score higher with more complex compound creation, Collect discovered compounds, Memorize molecule names with flashcards, Learn organic chemistry through gameplay

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 gem | $0.29 | one-time |
| 10 gems | $1.99 | one-time |


## Frequently asked questions

### Is 遊んで覚える古文単語500 free?

遊んで覚える古文単語500 is free to download, with no in-app purchases.

### Is Chempuz free?

Chempuz is free to download, with in-app purchases available.

### Do 遊んで覚える古文単語500 or Chempuz have ads?

Chempuz shows ads; 遊んで覚える古文単語500 does not.

### Which is updated more often, 遊んで覚える古文単語500 or Chempuz?

遊んで覚える古文単語500 ships an update every 4 months, and Chempuz every 5 weeks. Most recently, 遊んで覚える古文単語500 was updated on October 19, 2026 and Chempuz on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*